PrefaceNew Results Regarding the Cavitation Destruction Behavior of Heat-Treated CuZn39Pb3 Brass with Different ParametersNew Results Regarding the Cavitation Destruction Behavior of Heat-Treated CuSn12-C Bronze with Different ParametersISIM Achievements Regarding Friction Stir Welding in Inert Gas EnvironmentAspects Regarding the Operating Behavior of FSW Welding ToolsAspects Regarding Welding of DD13 Steel by Applying the FSW Process and some Processes Derived from itReview: Advantages of Repairing Machine Parts in Order to Restore their FunctionalitySimulation of Thermal Field in Eutectic Microwave Bonding for Electrical Connection of Photovoltaic CellsJoining Photovoltaic Cell Connection Strips Using Ultra-Acoustic Wave - Resistive Hybrid Heating SystemStudy of p-n Heterojunction Thin Films for Reducing Gas Sensing Application Fabricated by Thermal Evaporation TechniqueFly Ash Epoxy Composites with Superior Fire Retardant PropertiesThe Effect of Alkaline Concentration and Curing Temperature on the Durability of Fly Ash Geopolymer Mortar